The map shows major rivers in the United States.
Which river forms a border between the United States and Mexico?
the Brazos River
the Rio Grande
the Mississippi River
the Colorado River
The Correct Answer and Explanation is:
The correct answer is the Rio Grande.
The Rio Grande is a major river that forms a natural border between the United States and Mexico. It begins in the Rocky Mountains of Colorado and flows through New Mexico, along the border between Texas and Mexico, and eventually empties into the Gulf of Mexico. The Rio Grande is about 1,900 miles long, making it one of the longest rivers in North America. Its path along the U.S.-Mexico border is significant both geographically and politically, as it serves as a clear demarcation line between the two countries.
In terms of its role in international relations, the Rio Grande has been central to historical conflicts, treaties, and agreements between the United States and Mexico. For instance, after the U.S. victory in the Mexican-American War (1846-1848), the Treaty of Guadalupe Hidalgo was signed in 1848, which established the Rio Grande as the official border in the southern part of the U.S. The river is also crucial in the context of immigration, water rights, and trade, making it an important point of focus for both nations.
While other rivers in the United States, such as the Mississippi River and Colorado River, are significant in their own right, they do not form a boundary between the United States and Mexico. The Brazos River, located primarily in Texas, flows within the United States and does not serve as an international boundary.
Therefore, the Rio Grande is the only river among the options provided that forms a border between the United States and Mexico, making it the correct choice in this context.